Telegraph-transmitter.



R. F. GALE.

TELEGRAPH TRANSMITTER. APPLICATION FILED .TAN.15,1913.

1,109,4;1 1 Patented Sept. 1, 1914 3 SHEETS-SHEET 1.

R1 Gale R. F. GALE.

TELEGRAPH TRANSMITTER.

APPLICATION FILED JAN. 15, 1913.

1,109, 11 1 Patented Sept. 1, 1914.

, 3 SHEETS-11113! Z.

nuenkoz RF Gale. Huh woo R. F. GALE.

TELEGRAPH TRANSMITTER.

APPLICATION FILED JAN. 15, 1913.

1,109,41 1 Patented Sept. 1, 1914.

3 BHEETS -SHEET 3.

anaemic;

BI] Gale.

To all whom it may concern."

UNITED STA ES PAE NT O nor r. s e row: warms, INDIANA.-

'rnnneaarn-rmsivurrnm J Be it known that I, RorF. GALE,a citizen of theUnited States,""residing at Fort I the line and wherein'bymeans of'an'automatic vibrator the dot sending capacity of the transmitter will beincreased. 1

It is also my purpose to provide a trans mitter of the class described 1wherein by means of an automatic vibrator, composed of a vibratory levernormally held in circuit closing position and a magnet controlling suchlever connected in series with the line circuit, and a key for closingthe line circuit,

- the vibrator will operate automaticallvto alternately make and breakthe circuit there by increasing the range and capacity of: theinstrument 1n the transmission of dots, means being provided whereby thethrow of the lever of the vibrator may be'regulated in accordancewiththe circumstances of any particular case or theconditionsprevailing.

Furthermore, it is my purpose to provide a telegraph transmitter inwhich the vibrator will be cut out of service in the sending ortransmission of dashes and whereby a message composed of alternate dotsand dashes or a particular arrangement of such will be sent rapidly andeasily.

A further object of my invention is the provision of-an' instrumentof'the'type set forth which will embrace the desired features ofsimplicity, efiiciency, durability and convenience coupled withcheapness of cost in manufacture and marketing a'ndwhich may be readilyinstalled in a telegraph line or circuit. j With the above and otherobjects in view, the invention consists in the construction,-combination and arrangement of parts-hereinafter set forth in andfalling within the scope of the claims.

In the v accompanying drawings; Figure -1 is a perspective view of atransmitter constructed -n accordance with my presenting I 'is i fioatonof Letters Pate t 1:. I Amman filed January 5, 1913. Serial No.742,256...

Patent ase m, 191 4.

vention. Fig.. 2-isa top planview thereof.

Fig. 3 isa side elevation of the same. '-Fig. 41s a'atop plan view of akey usedinconjunction with my improved transmitter. Fig.

5 is an enlarged transverse sectional view throughFig. 4, F ig, 6 is aview in side elevation of thekey, and Fig. 7 is a diagrammatic view ofthe circuit connections of the Y transmitter.

Referring now to the accompanying drawingsli n detail, the numeral 1indicates the baseof my'improved transmitter, such base beingconstructed of any suitable material and of any: desired dimensions.Surmounting thebase l andupstanding therefrom approximately centrally ofthe length thereof is a support 2, such support, in the presentinstance, being in the form of a substantially u shaped yoke having thefree ends of the opposite limbs thereof suitably fastened to the uppersurface ofthe base.

In the present instance, my improved automatic vibrator compriseshorizontally disposed magnets- 3, 3 having the forward ends thereofprojected through and resting within openings in the support 2 while therear ends thereof carry a block 4 to which is rigidly connected one endof a shank 5 projects through a bore in a standard 6 upstanding from thebase-1 adjacent to one end thereof, the free end of the shank 5 beyondthe bearing on the standard 6 being screw threaded as at 7 to receive aknurled manipulating disk 8, while an expansion spring 9 encircles theshank between the block 4 and the standard. By means of thisconstruction, it will be seen that the spring 9 normally acts to forcethe magnets 3, 3 through the support-2 while by manipulating'the disk 8the magnets may be retracted against the action of the spring andmaintained in any desired position. The vibratory lever of the vibratoris indicated at 10 and is pivoted between its ends for vertical swingingmovement within h rizontally disposed adjustable bearings 11, 11 carriedby a yoke 12 secured tothe support 2 above and between the poles of themagnets 3, 3. Secured to the lever 1-0 is a horizontal armature 13disposed within the influence of the poles of the magnets 3, 3 andadapted, when the magnets are energized, to swing the lever in onedirection.v To the upper end of the vibratory lever 10 (if the automaticvibrator, that is the end above the yoke 12, is fastened a contact 14,herein shown to be in the form of jacent to the end thereof oppositefrom the standard 6 is a second standard 18 equipped at its upper endwith an outwardly extending arm 19 carrying an adjusting element 20rotatably mounted within a bearing on the free end of the arm 19 andconnected by means of a cord or the like 21 with one end of a coiledcontractile spring 22, the free end of the latter being connected to thevibratory lever and acting to hold the contacts 14 and in engagementwith each other. A weight. 23 or other controlling element is adjustablymounted upon the vibratory lever 10 adjacent to the lower end thereof sothat the movement of the lever may be regulated, while a yoke 24 ofsuitable construction embraces the upper extremity of the vibratorylever and has the opposite ends of the limbs thereof secured to thesupport 2 and extends outwardly from such support and carries anadjustable stop screw 25 disposed in the path of movement of approximateend of the lever to limit the movement thereof under the action of themagnets 3, 3. In order to limit the return movement of the vibratorylever of the vibrator under the action of the spring 22 any suitableform of check may be em ployed. In the present instance, a headed shank26 threadedly engages a horizontal bore formed in the lower end of thestandard l8 and carries at its free end-a butter 27 disposed in the pathof movement of the lower extremity of the lever 10 and adapted to becontacted by such lever when the latter is moved under the action of thespring 22 to engage the contacts 14 and 15.

Appropriately fastened to the upper sur face of the base 1 below themagnets 3, 3 of the vibrator is a suitableform of key by means of whichthe operation of the transmitter is controlled. In the embodiment of myinvention selected for illustrative purposes, this key comprises a. base28 carrying at one end thereof a substantially U-shaped bearing bracket29 equipped with oppositely disposed vertically alining bearing screws30, 30 between the confronting ends of which is pivoted one end of a keylever 31 adapted for horizontal swinging movement and provided withoppositely disposed contacts 32, 33 adapted to engage contacts 34, 35respectively carried upon posts 36 secured to the base at the endthereof opposite from the bearing bracket 29 and arranged at theopposite sides of the key lever 31. Mounted upon the base 28approximately centrally thereof is a tension adjuster 3T composed in thepresent instance of a yoke 38 having the opposite limbs thereofextending upwardly and formed with axially alining openings throughwhich is loosely passed a shank 39 provided with a head 40 at one endand equipped with a collar and pin 41 at the opposite end wherebyaccidental displacement of the shank is avoided. Between the limbs ofthe yoke 38 the shank 39 is provided with right and left handed screwthreads 42, 43 respectively and such threaded portions are passedthrough nuts 44, 45, while upon the central portion of the shank isloosely mounted a collar 46 having the opposite edges thereof formed toprovide annular flanges or shoulders 47, the collar 46 being passedthrough an opening in the key lever 31 while shoulders or flanges 47contact with the respective sides of the key lever to prevent movementof the lever independently of the collar, expansion springs surroundingsaid shank at opposite sides of the collar 46 and having the inner endthereof bearing upon the collar and the outer extremity abutting thenuts 44, -45. lVhen it is desired to vary the throw or horizontalmovement of the key lever 31, the shank 39 is rotated under the actionof the head 40 and moves the nuts 44, inwardly of the yoke or toward oneanother, or away from each other according, as it is desired to increase the movement of the key lever or decrease such movement. The freeend of the key lever 31 is equipped with a suitable form of manipulatingdevice 48 by means of which the keymay be operated in the well knownmanner. The switch of the key includes a switch lever 49 pivoted at oneend upon a stud 50 for swinging movement and in electrical communicationwith a binding post 51 common to the key lever and switch lever. Acontact 52 is adapted to be engaged by the lever 49 and has electricalconnections with the post 36 of the contact 35 so that when the switchis closed a complete circuit will be established through the key for thewell known purpose. Binding posts 53 have connections with the posts 36,36 of the contacts 34, 35 respectively and cooperate with the bindingpost 51 in order that the key may be properly connected in the linecircuitv and in circuit with the automatic vibrator in a manner whichwill presently appear.

Binding posts 54, 55 are appropriately fastened to the upper surface ofthe base 1 in convenient positions. Leading to the binding post 54 is aline wire 56, while leading from the binding post 54 is a conductor 57terminally connected to the binding post 51 of the key lever 31. Aconductor 58 has one terminal connected to the binding post 53 of thecontact 84 while the opposite terminal thereof is extended through thecoils of the magnets 3, 3 and has the free terminal thereof connected tothe contact 14: on the vibratory lever of the vibrator, a conductor 59being connected at one end to the contact 15 and at its opposite end tothe binding post. from which latter leads the linewire 60. From thebinding post 53 of the contact 35 extends a conductor 61 having the freeterminal thereof connected to the binding post 55 and forming with theconductor 57, when the key lever 31 is in engagement" with the contact35, a path for the current around the automatic vibrator.

From the foregoing description taken in connection with the accompanyingdrawing, the construction, mode of operation and manner of employing myinvention will be readily apparent. transmit a message composed of asuccessive number of dots, the key lever 31 is moved horizontally aboutits pivot to engage the contact 34: whereby the circuit is closedthrough the line wire 56, conductor 57, key lever 31, contact 34,conductor 58, through the magnets 3, 3, vibratory lever 10, contacts 14and 15, and the conductor 59 back through the line. As long as the keyis maintained in this position, the circuit at the contacts 14 and 15 isalternately made and broken as will be readily apparent thereby enablingthe sending of a successive number of dots in a minimum time and withease and facility. On the other hand, when it is desired to change fromdots to dashes, the key lever 31 is moved into engagement with thecontact 35 whereby the sending circuit is completed through the linewire 56, conductor 57, key lever and contact 35, conductor 61 and linewire 60. Thus, a path for the current is established around theautomatic vibrator and independently of such vibrator whereby the dashesmay be transmitted.

It will be noted that by means of my improved transmitter and sending ortransmitting of dots and dashes -may be readily alternated, that is, tosay, an operator may quickly manipulate the key lever from dot to dashsending position and vice versa.

By means of the weight 23 on the lover of the vibrator, the swingingmovement of such lever may be readily regulated or controlled, while thescrew 25 enables the movement of the lever under the action of themagnets to be adjusted, the check composed of the shank 26 and buffer 27controlling the movement of the vibratory lever under the action of thespring 22. In some cases, it may be found advantageous to vary thedistance between the poles of the magnets 3, 3 and the armature 13carried by the lever 10.

\Vhen it is desired to,

lVhen such' is desired, the magnets may be bodily moved toward and awayfrom the armature by means of the shank 5, manipulating disk 8 andspring 9, while the tension of the spring 22 may be readily adjustedthrough the medium of the cord or other flexible element 21 and theadjusting element 20. j

' It will be noted. that the lever of the au-v tomatic vibrator ismounted in such manner as to maintain a vertical position and swingabout a horizontal axis. This mounting of the lever is particularlyadvantageous in telegraph transmitters of this character for the reasonthat the lever more readily responds to the magnets, when the latter areenergized, and is also capable of a particularly fine and accurateadjustment.

IVhile I have herein shown and described one preferred form of myinvention by way of illustration, I desire to have it understood that Ido not limit or confine myself to the precise details of constructionherein described and delineated, as modification and variation may bemade within the scope of the claims and without departing from the spirtof the invention.

I claim:

1. A telegraph key comprising a base, a key lever pivoted upon the base,contacts disposed at the opposite sides of said key lever to facilitatethe sending of dots and dashes respectively, and a tension adjuster forcontrolling the movement of said key lever, said adjuster comprising ashank having relatively reverse screw threads formed thereon, and nutsreceiving said shank and adapted to be moved toward and away from eachother to vary the throw of the lever.

2. A telegraph key comprising a base, a key lever pivoted upon saidbase, contacts disposed at the opposite sides of said key lever tofacilitate the sending of dots and dashes respectively, and a tensionadjuster for controlling the movement of said key lever, said adjustercomprising a shank having relatively reverse screw threads formedthereon, nut-s threaded onto said shank and adapted to be moved towardand away from each other to vary the throw of said lever, and springsinterposed between said nuts and lover.

3. In a telegraph transmitter, a base, a support projecting upwardlyfrom said base, a magnet carried by said support, a yoke secured to saidsupport and extending outwardly therefrom above the pole of said magnet,horizontally alining adjustable bearings carried by said yoke, avertical lever pivoted within said bearings and capable of vibration, anarmature secured to said lever and disposed ithin the influence of thepole of said magnet and adapted when the magnet is energized to swingthe lever in one direction, a stationary contact secured to said supportabove said yoke, a contact carried by the upper end of said lever andada ted to alternately engage and disengage sai first contact in thevibration and bearing upon the adjacent end of said lever to limit theswmging movement thereof.

In testimony whereof I afiix my signature in presence of two witnesses.

ROY F. GALE.

Witnesses:

J. H. ADAMS, MARJORJE OsBoRN.

